check_stop_pair_count: Check the number of pairs of stops before comparing them

In gtfstools: General Transit Feed Specification (GTFS) Editing and Analysing Tools

Check the number of pairs of stops before comparing them

Description

Raises an error if the pairs can't be indexed, and a warning if comparing them may use a lot of memory (each pair takes about 64 bytes at the peak).

Usage

check_stop_pair_count(n_pairs, max_dist, arg_name, action, call)

Arguments

n_pairs	A number, the pairs of stops to be compared.
max_dist	A number, the distance given by the user, in meters.
arg_name	The name of the user-facing distance argument.
action	A string that starts the warning, e.g. "Merging stops".
call	The environment of the user-facing function, so that the error mentions it.

Value

Invisibly returns NULL, if it doesn't raise an error.

gtfstools documentation built on Oct. 28, 2026, 5:13 p.m.